Geological investigations and mineralogical characterization of the Awreith Gol Lead-Antimony Deposit, Chitral, Pakistan

Usman Ghani¹, Ishaq Ahmad¹

¹University of Engineering and Technology, Peshawar, Pakistan

Min. miner. depos. 2023, 17(4):103-108

https://doi.org/10.33271/mining17.04.103

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      ABSTRACT

      Purpose. The importance of mineralogical characterization for complex ore deposits is continuously increasing due to the increasing demand for minerals worldwide. The proper mineral characterization needs to be carried out for selecting appropriate processing technology for the beneficiation of complex ore in order to efficiently obtain ore concentrate according to the market demand. The purpose of this study is to carry out a detail mineral characterization of the complex lead-antimony ore deposit of Chitral, Pakistan, necessary for selecting the most appropriate processing technology and designing a mineral processing plant.

      Methods. In this research, a preliminary study was conducted on representative samples of complex lead-antimony ore deposits of the Awreith Gol area in Chitral, Pakistan to investigate and characterize the deposit prior to beneficiation, as well as to determine the processing potential of the deposit and to make a further decision on a suitable beneficiation technology. In this regard, thin section of complex ore representative samples was studied using a Scanning Electron Microscope for ore morphology analysis, EDX for chemical composition analysis, and X-ray fluorescence spectrometer analysis.

      Findings. The ore deposit of the studied area is mainly composed of sedimentary rocks and intrusions of igneous rocks with varying degrees of metamorphism. Geologically, the area is characterized by the Paleozoic-Mesozoic sequence of North Karakorum system and volcano-sedimentary series. The study of mineral characteristics confirms that galena and stibnite are ore minerals containing lead 48.01% and antimony 15.43%.

      Originality. The geological characteristics of the studied area have been explored. The studied ore consists of lead, antimony, stibnite and galena. The mineral characterization results have revealed that these metals can be extracted economically by selecting an appropriate mineral processing technology.

      Practical implications. Mineralogical study of the mineral, combined with the chemical analysis of the ore, confirms that the lead-antimony complex ore of Chitral deposit can be beneficiated using relatively cheap gravity separation technology.

      Keywords: mineralogical characterization, beneficiation, complex lead-antimony deposit, gravity separation

      REFERENCES

1. Ravi, R., & Causa, H. (2018). Strategies for rehabilitation of mine waste/leachate in Thailand. Bio-Geo-Technologies for Mine Site Rehabilitation, 617-643. https://doi.org/10.1016/B978-0-12-812986-9.00001-4
2. Mandal, B.B., & Hussain, S.A. (2021). Innovative exploration methods for minerals, oil, gas, and groundwater for sustainable development. Amsterdam, The Netherlands: Elsevier, 542 p.
3. Wellmer, F.W., & Kosinowski, M. (2003). Sustainable development and the use of nonrenewable resources. Geotimes, 48(12), 14-17.
4. Wellmer, F.W., & Becker-Platen, J.D. (2001). World natural resources policy (with focus on mineral resources). Natural Resources of the World, 183-207.
5. Wills, B.A. (2006). Mineral processing technology. Oxford, United Kingdom: Pergamon Press, 450 p.
6. Radetzki, M. (2017). A handbook of primary commodities in the global economy. New York, United States: Cambridge University Press, 233 p. https://doi.org/10.1017/CBO9780511493584
7. Kot-Niewiadomska, A., & Galos, K. (2019). Mineral resources in sustainable land-use planning. Mineral and Energy Economy Research Institute of the Polish Academy of Science, (1), 1-30.
8. Henley, S. (2004). The Russian reserves and resources reporting system. Discussion and Comparison with International Standards, 13 p.
9. Weatherstone, N. (2008). International standards for reporting of mineral reserves and resources status. World Mining Congress & Expo, 1-10.
10. Malkani, M.S., Alyani, M.I., Khosa, M.H., Muhammad, I., Khalid, K., Somro, N., Tehseen, Z.T., Jawad, A.J., & Zahid, M.A. (2017). Mineral deposits of Khyber Pakhtunkhwa and FATA (Pakistan). Research Article of the Lasbela University of Science and Technology, (6), 23-46.
11. Anderson, C.G. (2012). The metallurgy of antimony. Geochemistry, 72(4), 3-8. https://doi.org/10.1016/j.chemer.2012.04.001
12. Stefan, H. (2004). Kinematics of the Karakoram-Kohistan suture zone, Chitral, Pakistan. Doctoral Thesis. Zurich, Switzerland: Swiss Federal Institute of Technology Zurich.
13. Shah, M.T., & Jan, M.Q. (2002). Mineral resource potential of the Himalaya, Karakoram and Hindu Kush mountains, Northern Pakistan. Man Mountain and Medicine, Pakistan Heart Foundation, (2), 1-30.
14. Khan, A., & Ashraf, M. (2007). Geological and mining resources of Chitral district NWFP Pakistan. Quetta, Pakistan: Geological Survey of Pakistan, 126 p.
15. Aslam, M., Khan, A., & Ashraf, M. (2007). Geology and mineral resources of Chitral district, NWFP, Pakistan. Quetta, Pakistan: Records, Geological Survey of Pakistan, 126 p.
16. Sarwar, K., & Rahman, M. (2016). Economic impact of mineral resources: A case study of District Chitral, Pakistan. Journal of Resources Development and Management, (17), 1-15.
17. Anjum, M.N., Arif, M., & Ali, L. (2018). Mineralogical and beneficiation studies of the Fe-Cu ores of Dammal Nisar, Chitral, NW Himalayas Pakistan. Journal of Himalayan Earth Sciences, 51(2A), 108-119.
18. Pudsey, C.J., Coward, M.P., Luff, I.W., Shackleton, R.M., Windley, B.F., & Jan, M.Q. (1985). Collision zone between the Kohistan arc and the Asian plate in NW Pakistan. Transactions of the Royal Society of Edinburgh, 76(4), 463-480. https://doi.org/10.1017/S026359330001066X
19. Shah, M.I. (2009). Stratigraphy of Pakistan. GPS Memoir, (22), 1-35.
20. Erdemoglu, M., & Balaz, P. (2011). An overview of surface analysis techniques for characterization of mechanically activated minerals. Mineral Processing and Extractive Metallurgy, (33), 65-88. https://doi.org/10.1080/08827508.2010.542582
21. Liu, J. (2005). High resolution scanning electron microscopy. Handbook of Microscopy for Nanotechnology, 325-359. https://doi.org/10.1007/1-4020-8006-9_11
22. Klauber, C., & Smart, R.C. (2003). Solid surfaces, their structure, and composition, surface analysis methods in materials science. Berlin, Germany: Springer, 585 p.
23. Cook, N.J. (2000). Mineral characterization of industrial minerals deposits at the geological survey of Norway, a short introduction. Norgesgeologiske Under Sokelse Bulletin, (436), 189-192.
24. Panalytical, B.V. (2010). What is XRF. Theory of X-rays Fluorescence XRF, (3), 12-16.
25. Shackley, M.S. (2011). X-Ray fluorescence spectrometry (XRF) in geoarchaeology. New York, United States: Springer, 231 p. https://doi.org/10.1007/978-1-4419-6886-9
26. Kothleitner, G., Neish, M.J., Lugg, N.R., Findlay, S.D., Grogger, W., Hofer, F., & Allen, L.J. (2014). Quantitative elemental mapping at atomic resolution using Xay-Spectroscopy. Physical Review Letters, (112), 085501. https://doi.org/10.1103/PhysRevLett.112.085501
27. Cabri, L.J., & Vaughan, D.J. (1998). Modern approaches to ore and environmental mineralogy. Mineralogical Association of Canada.